How to use Context method of NBi.Core.Variable.Context class

Best NBi code snippet using NBi.Core.Variable.Context.Context

ScalarResolverFactoryTest.cs

Source:ScalarResolverFactoryTest.cs Github

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...33 var resolver = factory.Instantiate(args);34 Assert.That(resolver, Is.TypeOf<GlobalVariableScalarResolver<object>>());35 }36 [Test]37 public void Instantiate_ContextArgs_ContextResolver()38 {39 using (var dt = new DataTable())40 {41 var context = Context.None;42 context.Switch(dt.NewRow());43 var args = new ContextScalarResolverArgs(context, new ColumnOrdinalIdentifier(0));44 var factory = new ScalarResolverFactory(null);45 var resolver = factory.Instantiate(args);46 Assert.That(resolver, Is.TypeOf<ContextScalarResolver<object>>());47 }48 }49 [Test]50 public void Instantiate_QueryArgs_QueryResolver()51 {52 var args = new QueryScalarResolverArgs(new EmbeddedQueryResolverArgs("select * from table;", "connStr", null, null, new TimeSpan()));53 var factory = new ScalarResolverFactory(null);54 var resolver = factory.Instantiate(args);55 Assert.That(resolver, Is.TypeOf<QueryScalarResolver<object>>());56 }57 [Test]58 public void Instantiate_ProjectionResultSetArgs_ProjectionResultSetResolver()59 {60 var args = new RowCountResultSetScalarResolverArgs(new ResultSetResolverArgs());61 var stub = new Mock<ServiceLocator>();62 stub.Setup(x => x.GetResultSetResolverFactory()).Returns(new ResultSetResolverFactory(stub.Object));63 var factory = new ScalarResolverFactory(stub.Object);64 var resolver = factory.Instantiate(args);65 Assert.That(resolver, Is.TypeOf<ProjectionResultSetScalarResolver<object>>());66 }67 [Test]68 public void Instantiate_CSharpArgs_CSharpResolver()69 {70 var args = new CSharpScalarResolverArgs("DateTime.Now.Year");71 var factory = new ScalarResolverFactory(null);72 var resolver = factory.Instantiate(args);73 Assert.That(resolver, Is.TypeOf<CSharpScalarResolver<object>>());74 }75 [Test]76 public void Instantiate_EnvironmentArgs_EnvironmentResolver()77 {78 var args = new EnvironmentScalarResolverArgs("myVar");79 var factory = new ScalarResolverFactory(null);80 var resolver = factory.Instantiate(args);81 Assert.That(resolver, Is.TypeOf<EnvironmentScalarResolver<object>>());82 }83 [Test]84 public void Instantiate_FormatArgs_FormatResolver()85 {86 var args = new FormatScalarResolverArgs("myVar", new Dictionary<string, IVariable>());87 var factory = new ScalarResolverFactory(null);88 var resolver = factory.Instantiate<string>(args);89 Assert.That(resolver, Is.TypeOf<FormatScalarResolver>());90 }91 [Test]92 public void InstantiateNeutral_FormatArgs_FormatResolver()93 {94 var args = new FormatScalarResolverArgs("myVar", new Dictionary<string, IVariable>());95 var factory = new ScalarResolverFactory(null);96 var resolver = factory.Instantiate(args);97 Assert.That(resolver, Is.TypeOf<FormatScalarResolver>());98 }99 [Test]100 public void InstantiateNotString_FormatArgs_FormatResolver()101 {102 var args = new FormatScalarResolverArgs("myVar", new Dictionary<string, IVariable>());103 var factory = new ScalarResolverFactory(null);104 var ex = Assert.Throws<ArgumentException>(() => factory.Instantiate<object>(args));105 }106 [Test]107 public void Instantiate_FunctionArgs_FunctionResolver()108 {109 var args = new FunctionScalarResolverArgs(new LiteralScalarResolver<string>("myVar"), new INativeTransformation[] { });110 var factory = new ScalarResolverFactory(null);111 var resolver = factory.Instantiate(args);112 Assert.That(resolver, Is.TypeOf<FunctionScalarResolver<object>>());113 }114 [Test]115 public void Instantiate_NCalcArgs_NcalcResolver()116 {117 var context = new Context(null);118 var args = new NCalcScalarResolverArgs("a * b - 2", context);119 var factory = new ScalarResolverFactory(null);120 var resolver = factory.Instantiate(args);121 Assert.That(resolver, Is.TypeOf<NCalcScalarResolver<object>>());122 }123 }124}...

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RowValueExtractor.cs

Source:RowValueExtractor.cs Github

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...17 {18 private ServiceLocator ServiceLocator { get; }19 public RowValueExtractor(ServiceLocator serviceLocator)20 => (ServiceLocator) = (serviceLocator);21 public object Execute(Context context, IColumnIdentifier identifier)22 {23 if (identifier is ColumnOrdinalIdentifier)24 {25 var ordinal = (identifier as ColumnOrdinalIdentifier).Ordinal;26 if (ordinal <= context.CurrentRow.Table.Columns.Count)27 return context.CurrentRow.ItemArray[ordinal];28 else29 throw new ArgumentException($"The variable of the predicate is identified as '{identifier.Label}' but the column in position '{ordinal}' doesn't exist. The dataset only contains {context.CurrentRow.Table.Columns.Count} columns.");30 }31 var name = (identifier as ColumnNameIdentifier).Name;32 var alias = context.Aliases?.SingleOrDefault(x => string.Equals(x.Name, name, StringComparison.OrdinalIgnoreCase));33 if (alias != null)34 return context.CurrentRow.ItemArray[alias.Column];35 var expression = context.Expressions?.SingleOrDefault(x => string.Equals(x.Name, name, StringComparison.OrdinalIgnoreCase));36 if (expression != null)37 {38 var result = EvaluateExpression(expression, context);39 var expColumnName = $"exp::{name}";40 if (!context.CurrentRow.Table.Columns.Contains(expColumnName))41 {42 var newColumn = new DataColumn(expColumnName, typeof(object));43 context.CurrentRow.Table.Columns.Add(newColumn);44 }45 context.CurrentRow[expColumnName] = result;46 return result;47 }48 var column = context.CurrentRow.Table.Columns.Cast<DataColumn>().SingleOrDefault(x => string.Equals(x.ColumnName, name, StringComparison.OrdinalIgnoreCase));49 if (column != null)50 return context.CurrentRow[column.ColumnName];51 var existingNames = context.CurrentRow.Table.Columns.Cast<DataColumn>().Select(x => x.ColumnName)52 .Union(context.Aliases.Select(x => x.Name)53 .Union(context.Expressions.Select(x => x.Name)));54 throw new ArgumentException($"The value '{name}' is not recognized as a column position, a column name, a column alias or an expression. Possible arguments are: '{string.Join("', '", existingNames.ToArray())}'");55 }56 protected object EvaluateExpression(IColumnExpression expression, Context context)57 {58 if (expression.Language == LanguageType.NCalc)59 {60 var exp = new NCalc.Expression(expression.Value);61 var factory = new ColumnIdentifierFactory();62 exp.EvaluateParameter += delegate (string name, NCalc.ParameterArgs args)63 {64 args.Result = name.StartsWith("@")65 ? context.Variables[name.Substring(1, name.Length-1)].GetValue()66 : Execute(context, factory.Instantiate(name));67 };68 return exp.Evaluate();69 }70 else if (expression.Language == LanguageType.Native)...

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ContextScalarResolver.cs

Source:ContextScalarResolver.cs Github

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...8using System.Text;9using System.Threading.Tasks;10namespace NBi.Core.Scalar.Resolver11{12 class ContextScalarResolver<T> : IScalarResolver<T>13 {14 private Context Context { get; }15 private IColumnIdentifier ColumnIdentifier { get; }16 public ContextScalarResolver(ContextScalarResolverArgs args)17 => (Context, ColumnIdentifier) = (args.Context, args.ColumnIdentifier);18 internal ContextScalarResolver(Context context, IColumnIdentifier columnIdentifier)19 => (Context, ColumnIdentifier) = (context, columnIdentifier);20 public T Execute()21 {22 var evaluation = Context.CurrentRow.GetValue(ColumnIdentifier);23 var typedEvaluation = StrongTypingVariable(evaluation);24 return (T)typedEvaluation;25 }26 object IResolver.Execute() => Execute();27 private static object StrongTypingVariable(object input)28 {29 IFormatProvider formatProvider = typeof(T) == typeof(DateTime)30 ? (IFormatProvider)System.Globalization.DateTimeFormatInfo.InvariantInfo31 : System.Globalization.NumberFormatInfo.InvariantInfo;32 if (input != null && input.ToString().EndsWith("%"))33 input = input.ToString().Substring(0, input.ToString().Length - 1);34 var output = Convert.ChangeType(input, typeof(T), formatProvider);35 return output;36 }...

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Context

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1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using NBi.Core.Variable;7{8 {9 static void Main(string[] args)10 {11 var context = new Context();12 context.Add("a", "b");13 context.Add("c", "d");14 context.Add("e", "f");15 var result = context.Get("a");16 Console.WriteLine(result);17 Console.ReadKey();18 }19 }20}

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Context

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1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using NBi.Core.Variable;7{8 {9 static void Main(string[] args)10 {11 Context context = new Context();12 context.Add("var1", "value1");13 context.Add("var2", "value2");14 context.Add("var3", "value3");15 string value = context.Get("var1");16 Console.WriteLine(value);17 Console.ReadKey();18 }19 }20}

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Context

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1var context = new NBi.Core.Variable.Context();2context.Add("var1", "value1");3context.Add("var2", "value2");4context.Add("var3", "value3");5context.Add("var4", "value4");6context.Add("var5", "value5");7context.Add("var6", "value6");8context.Add("var7", "value7");9context.Add("var8", "value8");10context.Add("var9", "value9");11context.Add("var10", "value10");12context.Add("var11", "value11");13context.Add("var12", "value12");14context.Add("var13", "value13");15context.Add("var14", "value14");16context.Add("var15", "value15");17context.Add("var16", "value16");18context.Add("var17", "value17");19context.Add("var18", "value18");20context.Add("var19", "value19");21context.Add("var20", "value20");22context.Add("var21", "value21");23context.Add("var22", "value22");24context.Add("var23", "value23");25context.Add("var24", "value24");26context.Add("var25", "value25");27context.Add("var26", "value26");28context.Add("var27", "value27");29context.Add("var28", "value28");30context.Add("var29", "value29");31context.Add("var30", "value30");32context.Add("var31", "value31");33context.Add("var32", "value32");34context.Add("var33", "value33");35context.Add("var34", "value34");36context.Add("var35", "value35");37context.Add("var36", "value36");38context.Add("var37", "value37");39context.Add("var38", "value38");40context.Add("var39", "value39");41context.Add("var40", "value40");42context.Add("var41", "value41");43context.Add("var42", "value42");44context.Add("var43", "value43");45context.Add("var44", "value44");46context.Add("var45", "value45");47context.Add("var46", "value46");48context.Add("var47", "value47");49context.Add("var48", "value48");50context.Add("var49", "value

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Context

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1using NBi.Core.Variable;2{3 static void Main(string[] args)4 {5 var context = new Context();6 context.Add("name", "John");7 context.Add("surname", "Doe");8 context.Add("age", 42);9 var name = context.Get<string>("name");10 var surname = context.Get<string>("surname");11 var age = context.Get<int>("age");12 Console.WriteLine($"Name: {name}");13 Console.WriteLine($"Surname: {surname}");14 Console.WriteLine($"Age: {age}");15 }16}17using NBi.Core.Variable;18{19 static void Main(string[] args)20 {21 var context = new Context();22 context.Add("name", "John");23 context.Add("surname", "Doe");24 context.Add("age", 42);25 var name = context.Get<string>("name");26 var surname = context.Get<string>("surname");27 var age = context.Get<int>("age");28 Console.WriteLine($"Name: {name}");29 Console.WriteLine($"Surname: {surname}");30 Console.WriteLine($"Age: {age}");31 }32}33using NBi.Core.Variable;34{35 static void Main(string[] args)36 {37 var context = new Context();38 context.Add("name", "John");39 context.Add("surname", "Doe");40 context.Add("age", 42);41 var name = context.Get<string>("name");42 var surname = context.Get<string>("surname");43 var age = context.Get<int>("age");44 Console.WriteLine($"Name: {name}");45 Console.WriteLine($"Surname: {surname}");46 Console.WriteLine($"Age: {age}");47 }48}49using NBi.Core.Variable;50{51 static void Main(string[] args)52 {53 var context = new Context();54 context.Add("name", "John");55 context.Add("surname", "Doe");56 context.Add("age", 42);57 var name = context.Get<string>("name");58 var surname = context.Get<string>("surname");59 var age = context.Get<int>("age");60 Console.WriteLine($"Name

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Context

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1var context = new NBi.Core.Variable.Context();2var value = context.Get("myVariable");3var context = new NBi.Core.Variable.Context();4var value = context.Get("myVariable");5var context = new NBi.Core.Variable.Context();6var value = context.Get("myVariable");7var context = new NBi.Core.Variable.Context();8var value = context.Get("myVariable");9var context = new NBi.Core.Variable.Context();10var value = context.Get("myVariable");11var context = new NBi.Core.Variable.Context();12var value = context.Get("myVariable");13var context = new NBi.Core.Variable.Context();14var value = context.Get("myVariable");15var context = new NBi.Core.Variable.Context();16var value = context.Get("myVariable");17var context = new NBi.Core.Variable.Context();18var value = context.Get("myVariable");19var context = new NBi.Core.Variable.Context();20var value = context.Get("myVariable");

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Context

Using AI Code Generation

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1using NBi.Core.Variable;2using System;3using System.Collections.Generic;4using System.Linq;5using System.Text;6using System.Threading.Tasks;7{8 {9 static void Main(string[] args)10 {11 Context context = new Context();12 string value = context.Get("variable1");13 Console.WriteLine(value);14 }15 }16}

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Context

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1var context = new Context();2var expected = context.Get("string");3var context = new NBi.Core.Variable.Context();4var expected = context.Get("string");5var context = new Context();6var expected = context.Get("string");7var context = new NBi.Core.Variable.Context();8var expected = context.Get("string");9Name Description {guid} A GUID (Globally Unique Identifier) value. {random} A random integer value. {today} The current date. {now} The current date and time. {tomorrow} The date of tomorrow. {yesterday} The date of yesterday. {today+1d} The date of the day after tomorrow. {today-1d} The date of the day before yesterday. {today+1m} The date of next month. {today-1m} The date of previous month. {today+1y} The date of next year. {today-1y} The date of previous year. {today+1w} The date of next week. {today-1w} The date of previous week. {today+2w} The date of the week after next. {today-2w} The date of the week before previous. {today+3w} The date of the week after after next. {today-3w} The date of the week before before previous. {today+4w} The date of the week after after after next. {today-4w} The date of the week before before before previous. {today+5w} The date of the week after after after after next. {today-5w} The date of the week before before

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Context

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1using NBi.Core.Variable;2string str = Context.Get("myVar");3using NBi.Core.Variable;4string str = Context.Get("myVar");5using NBi.Core.Variable;6string str = Context.Get("myVar");

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